Mail all your business correspondence with this 500-count box of self-sealing Staples Reveal-N-Seal security-tinted double-window envelopes. Send important mailings in these legal-size Staples Reveal-N-Seal envelopes. The security tint printed on the inside prevents sensitive data from showing through, making these envelopes ideal for mailing invoices, checks, or classified information. Each envelope in this 500-count box of Staples Reveal-N-Seal envelopes features a double-window cutout on its face so addresses show through, and a convenient self-seal closure on the back lets you quickly and neatly secure contents for hassle-free mailing. #10 business envelopes are suitable for all your mailing needs. White color is ideal for business or personal correspondence. These envelopes measure 4 1/8"H x 9 1/2"L in size, providing enough space for your mail. Reveal-N-Seal closure with wallet flap seals securely without moistening. Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope. Convenient box of 500 envelopes ensures ample supply. Double-window envelopes for easy display of addresses. The flap is on the long side for easier filling.